Imported Upstream version 5.4.0.167

Former-commit-id: 5624ac747d633e885131e8349322922b6a59baaa

mcs/class/referencesource/System.Web.DataVisualization/Common/Formulas/FormulaRegistry.cs

@@ -0,0 +1,201 @@
+//-------------------------------------------------------------
+// <copyright company=<3D>Microsoft Corporation<6F>>
+//   Copyright <20> Microsoft Corporation. All Rights Reserved.
+// </copyright>
+//-------------------------------------------------------------
+// @owner=alexgor, deliant
+//=================================================================
+//  File:		FormulaRegistry.cs
+//
+//  Namespace:	System.Web.UI.WebControls[Windows.Forms].Charting.Formulas
+//
+//	Classes:	FormulaRegistry
+//
+//  Purpose:	Keep track of all registered formula module types.
+//
+//	Reviewed:	GS - August 6, 2002
+//				AG - August 7, 2002
+//
+//===================================================================
+
+
+#region Used namespace
+
+using System;
+using System.Collections;
+using System.ComponentModel;
+using System.ComponentModel.Design;
+
+#endregion
+
+
+
+#if Microsoft_CONTROL
+	namespace System.Windows.Forms.DataVisualization.Charting.Formulas
+#else
+	namespace System.Web.UI.DataVisualization.Charting.Formulas
+#endif
+{
+	/// <summary>
+	/// Keep track of all registered formula modules types.
+	/// </summary>
+	internal class FormulaRegistry : IServiceProvider
+	{
+		#region Fields
+
+		// Storage for all registered formula modules
+		internal	Hashtable	registeredModules = new Hashtable(StringComparer.OrdinalIgnoreCase);
+        private Hashtable _createdModules = new Hashtable(StringComparer.OrdinalIgnoreCase);
+		private		ArrayList	_modulesNames = new ArrayList();
+
+		#endregion
+
+		#region Methods
+
+		/// <summary>
+		/// Formula Registry public constructor
+		/// </summary>
+		public FormulaRegistry()
+		{
+		}
+
+		/// <summary>
+		/// Adds modules into the registry.
+		/// </summary>
+		/// <param name="name">Module name.</param>
+		/// <param name="moduleType">Module class type.</param>
+		public void Register(string name, Type moduleType)
+		{
+			// First check if module with specified name already registered
+			if(registeredModules.Contains(name))
+			{
+				// If same type provided - ignore
+				if(registeredModules[name].GetType() == moduleType)
+				{
+					return;
+				}
+
+				// Error - throw exception
+				throw( new ArgumentException( SR.ExceptionFormulaModuleNameIsNotUnique( name ) ) );
+			}
+
+			// Add Module Name
+			_modulesNames.Add(name);
+
+			// Make sure that specified class support IFormula interface
+			bool	found = false;
+			Type[]	interfaces = moduleType.GetInterfaces();
+			foreach(Type type in interfaces)
+			{   
+				if(type == typeof(IFormula))
+				{
+					found = true;
+					break;
+				}
+			}
+			if(!found)
+			{
+				throw( new ArgumentException( SR.ExceptionFormulaModuleHasNoInterface));
+			}
+
+			// Add formula module to the hash table
+			registeredModules[name] = moduleType;
+		}
+		
+		/// <summary>
+		/// Returns formula module registry service object.
+		/// </summary>
+		/// <param name="serviceType">Service AxisName.</param>
+		/// <returns>Service object.</returns>
+		[EditorBrowsableAttribute(EditorBrowsableState.Never)]
+		object IServiceProvider.GetService(Type serviceType)
+		{
+			if(serviceType == typeof(FormulaRegistry))
+			{
+				return this;
+			}
+			throw (new ArgumentException( SR.ExceptionFormulaModuleRegistryUnsupportedType( serviceType.ToString())));
+		}
+
+		/// <summary>
+		/// Returns formula module object by name.
+		/// </summary>
+		/// <param name="name">Formula Module name.</param>
+		/// <returns>Formula module object derived from IFormula.</returns>
+		public IFormula GetFormulaModule(string name)
+		{
+			// First check if formula module with specified name registered
+			if(!registeredModules.Contains(name))
+			{
+				throw( new ArgumentException( SR.ExceptionFormulaModuleNameUnknown( name ) ) );
+			}
+
+			// Check if the formula module object is already created
+			if(!_createdModules.Contains(name))
+			{	
+				// Create formula module object
+				_createdModules[name] = 
+					((Type)registeredModules[name]).Assembly.
+					CreateInstance(((Type)registeredModules[name]).ToString());
+			}
+
+			return (IFormula)_createdModules[name];
+		}
+
+		/// <summary>
+		/// Returns the name of the module.
+		/// </summary>
+		/// <param name="index">Module index.</param>
+		/// <returns>Module Name.</returns>
+		public string GetModuleName( int index )
+		{
+			return (string)_modulesNames[index];
+		}
+
+		#endregion
+
+		#region Properties
+
+		/// <summary>
+		/// Return the number of registered modules.
+		/// </summary>
+		public int Count
+		{
+			get
+			{
+				return _modulesNames.Count;
+			}
+		}
+		
+		#endregion
+	}
+
+    /// <summary>
+    /// Interface which defines the set of standard methods and
+    /// properties for each formula module
+    /// </summary>
+	internal interface IFormula
+	{
+		#region IFormula Properties and Methods
+
+		/// <summary>
+		/// Formula Module name
+		/// </summary>
+		string Name			{ get; }
+
+        /// <summary>
+        /// The first method in the module, which converts a formula 
+        /// name to the corresponding private method.
+        /// </summary>
+        /// <param name="formulaName">String which represent a formula name</param>
+        /// <param name="inputValues">Arrays of doubles - Input values</param>
+        /// <param name="outputValues">Arrays of doubles - Output values</param>
+        /// <param name="parameterList">Array of strings - Formula parameters</param>
+        /// <param name="extraParameterList">Array of strings - Extra Formula parameters from DataManipulator object</param>
+        /// <param name="outLabels">Array of strings - Used for Labels. Description for output results.</param>
+		void Formula(string formulaName, double [][] inputValues, out double [][] outputValues, string [] parameterList, string [] extraParameterList, out string [][] outLabels  );
+
+		#endregion
+	}
+}
+